JP2019044391A - Column base hardware and construction method of column base hardware - Google Patents

Abstract

To provide a column base hardware which can be constructed so that mortar provided below can be accommodated well, and to provide a construction method of the column base hardware.SOLUTION: Column base hardware 1 is installed on a foundation 2 via adjustment mortar 6 and supports a columns 20 and it includes: a base plate-like part 10 placed on the adjustment mortar; a receiving plate-like part 13 which is provided being separated so as to be located on the upper side of the base plate-like part, and on which a lower end 21 of the column is placed; and a connection part 16 for connecting these base plate-like part and the receiving plate-like part. On the base plate-like part, a plurality of through-holes or a plurality of cutout-like recesses 12 are provided for constituting an injection part 19 of mortar 8 filled between a form 18 provided on the foundation so as to surround the periphery of the base plate-like part and the adjustment mortar.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a column base supporting a column and a method of installing the column base.

2. Description of the Related Art A pedestal supported between a foundation and a column and supporting the column is known.
For example, Patent Document 1 below discloses a column base equipped with a substrate, a standing plate and a column support plate. The pedestal is installed with a mortar interposed under the substrate so as to reach a predetermined installation level.

JP 11-172767 A

  However, in the pedestal described in Patent Document 1, it is difficult to make the mortar under the substrate conform to the outer shape of the substrate, and further improvement is desired.

  The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a column base material capable of receiving a mortar provided on the lower side and constructing it well and a method of installing the column base material.

  In order to achieve the above object, a pillar base according to the present invention is a pillar base which is installed on a foundation via an adjustment mortar and supports the column, and a base plate placed on the adjustment mortar , And a receiving plate which is spaced apart from the base plate so that the lower end of the pillar is placed, and the base plate and the receiving plate. And a connection portion to be connected, the mortar being provided in the base plate portion between the formwork provided on the foundation so as to surround the periphery of the base plate portion and the adjustment mortar. A plurality of through holes or a plurality of cutouts forming the injection portion are provided.

  Further, in order to achieve the above object, the method of installing a column base according to the present invention is a method of installing a column base according to the present invention, which includes the step of constructing an adjustment mortar on a foundation, and the adjustment mortar Installing the column base on the base, installing a mold on the foundation so as to surround the base plate-like portion of the base, and between the mold and the adjustment mortar, Injecting and filling mortar through the injection part.

  With the pillar base material according to the present invention and the construction method of the pillar base material, the mortar provided on the lower side can be stored well and constructed by using the above-described configuration.

(A) is a schematic perspective view which shows typically an example of the pillar basement which concerns on one Embodiment of this invention, (b) has abbreviate | omitted the part which shows the state which applied the column basement typically. It is a partially broken schematic perspective view. (A) is a schematic front view of the column footing, (b) is a schematic plan view of the column footing, (c) is a schematic side view of the column footing (left side view), (d) Is a schematic bottom view of the same pillar footings. (A)-(d) show typically an example of the construction method of the pillar footings, (a), (b) (d) is a schematic front view, (c) is X in (b) It is a partially broken schematic cross-sectional view made to respond | correspond to-X-ray arrow. (A), (b) is a schematic front view which each shows typically the state which constructed the pillar footings.

Hereinafter, embodiments of the present invention will be described based on the drawings.
In some of the drawings, some of the detailed reference numerals attached to the other drawings are omitted. Further, in FIG. 2, the rear view is omitted because it is the same as the front view, and the right side view is omitted because it is the same as the left view.
Moreover, in the following embodiments, the directions such as the vertical direction will be described on the basis of the state in which the pedestal according to the present embodiment is installed.

1-4 is a figure which shows typically an example of the pillar basement concerning this embodiment, and the construction method of this pillar basement.
The column base 1 according to the present embodiment is installed on a foundation 2 via an adjustment mortar 6 and configured to support a column 20, as shown in FIGS. 1 and 3A.
The foundation 2 may be a slab (concrete slab) provided between the upper floor and the lower floor or on the ground. The foundation 2 may be provided indoors or may be provided outdoors. As shown in FIG. 3A, anchor bolts 3 are provided on the foundation 2 so as to project upward. In the illustrated example, an example is shown in which two anchor bolts 3 are provided on the base 2 so as to be at positions corresponding to the bolt insertion holes 11 of the column base 1 to be described later. The lower end side portions of the anchor bolts 3 are embedded in the base 2, and the anchor bolts 3 are arranged along the axial direction in the vertical direction.

  In the present embodiment, the pillars 20 are, for example, wood made of a wood-based material such as structural laminated wood, and the shape (cross-sectional shape) seen in the longitudinal direction is substantially square (in the illustrated example, substantially square) It is considered as The dimension of the column 20 (the dimension of one side of the cross sectional shape) may be the same as that of a general tubular column (for example, about 100 mm to 120 mm), or larger than this (for example, 150 mm or more, preferably It may be 180 mm or more, or may be 250 mm or less. When the pillars 20 have a large cross-sectional shape of 150 mm square or more, the load resistance can be improved. For example, when the pillars 20 are installed as independent pillars, the dimensions between the adjacent pillars 20 are set. It can be made large and can form a relatively large space.

Further, the lower end 21 of the pillar 20 is provided with a recess 22 which opens downward. The recess 22 is slit-shaped in this embodiment. Further, the recess 22 is provided at a substantially central portion between both side surfaces of the lower end 21 of the pillar 20 facing in the first direction, and penetrates in a second direction orthogonal to the first direction. There is.
Further, at the lower end 21 of the column 20, a pin insertion hole 23 is provided. The pin insertion hole 23 is opened along at least one of the side surfaces of the lower end 21 of the lower end of the column 20 facing the first direction and along the first direction so as to communicate with the recess 22 described above. It is formed. In this embodiment, two pin insertion holes 23 and 23 are provided at the lower end 21 of the pillar 20 at intervals in the second direction. These pin insertion holes 23 and 23 may penetrate the lower end 21 of the pillar 20 in the first direction.

  Although this pillar 20 and the pillar base 1 can be installed in various places, for example, in FIG. 4 (a), the lower side of the floor material 28 provided via a suitable foundation on a rising foundation portion not shown. The example which installed the pillar base 1 in the space (under-floor space) of the side is shown. In this example, a bundle material (steel bundle) 25 supporting the large pulls 26 is disposed on the foundation 2 at appropriate intervals, and a joist 27 as a floor base is provided on the foundation and the large pull 26. Shows an example in which a floor material 28 is provided. Further, the floor material 28 is disposed so as to surround the lower end 21 of the column 20, and the wall materials 29, 29 constituting the wall are fixed to both side surfaces of the column 20 in the first direction or the second direction. An example is shown in which baseboards 30 and 30 are provided at the corner with the floor material 28.

Moreover, in FIG.4 (b), the example which provided thin-sheet-like flooring 28A on the foundation 2, and installed the pillar base 1 via the columnar mortar 9 later mentioned on this flooring 28A is shown. Moreover, the example which fixed the wall materials 29 and 29 which comprise a wall to the both sides | surfaces of the pillar 20 so that a part of the pillar base 1 and the columnar mortar 9 may be covered is shown. Moreover, the example which provided the baseboards 30 and 30 in the entrance corner part of the wall body and the floor material 28A is shown substantially the same as the above. In addition, it is good also as a floor surface in place of the aspect provided with the floor material 28A which comprises a floor surface, and the concrete-like surface in the shape of a shot is made.
Moreover, as a construction aspect of the column 20 and the column base 1, it is not restricted to such a construction aspect, For example, even if a pillar 20 is constructed independently as a pillar, without comprising the foundation of a wall. Besides, it is possible to adopt various construction modes.

The pedestal 1 is provided with a base plate portion 10 placed on the adjustment mortar 6 as shown in FIGS. 1 and 3 (a). The adjustment mortar 6 is provided such that the shape in plan view is smaller than the shape in plan view of the base plate-like portion 10, as shown in FIG. 3 (c). That is, the adjustment mortar 6 is provided so as to be accommodated in the base plate portion 10 in plan view. Moreover, in the example of a figure, the planar view of the adjustment mortar 6 is made into substantially circular shape, and the example provided so that it may become a position which the anchor bolts 3 and 3 penetrate is shown.
The base plate-like portion 10 is substantially in the form of a flat plate disposed along the thickness direction in the vertical direction. As shown in FIGS. 3 (b) and 3 (c), the base plate 10 is provided between the mold 18 provided on the foundation 2 and the adjustment mortar 6 so as to surround the periphery of the base plate 10. A plurality of through holes or a plurality of notched recesses 12 constituting the injection portion 19 of the mortar 8 to be filled in are provided.

  In this embodiment, the base plate-like portion 10 is substantially polygonal in plan view, and is provided with the notch-like concave portion 12 constituting the injection portion 19 at each corner. Further, the base plate-like portion 10 is substantially square (in the example of the figure, substantially square) in plan view in correspondence with the cross-sectional shape of the column 20. That is, at the four corners of the base plate 10, notches 12, 12, 12, 12 constituting the injection parts 19, 19, 19, 19 are provided. The dimension of one side (the dimension along the first direction and the dimension along the second direction) of the base plate-like portion 10 is a dimension slightly smaller than the dimension of one side of the column 20 (for example, a dimension smaller than several mm) (See FIG. 1 (b) and FIGS. 2 (a) and 2 (c)).

These cutouts 12, 12, 12, 12 may be of any suitable shape depending on the shape of the tip of the injection tool 7 into which the mortar 8 filled around the adjustment mortar 6 is injected. In the example of the figure, the example which provided notch-shaped recessed part 12, 12, 12, 12 in C chamfer shape at four corners of the base plate-like-part 10 is shown. That is, in a state where the mold 18 is provided so as to surround the four circumferences of the base plate 10, the planar view is made by the notches 12, 12, 12, 12 of the base plate 10 and the inside corner of the mold 18. Thus, injection portions 19, 19, 19 and 19 having a substantially right triangle shape are formed. The notch-shaped recess 12 is not limited to the C-chamfered shape, and may have a substantially V-shape or a substantially U-shape or the like in a plan view.
The mortar 8 is filled around the adjustment mortar 6 by injecting the mortar 8 through at least one of the injection portions 19, 19, 19, 19 constituted by the notch-like concave portions 12, 12, 12, 12. Be done. When the mortar 8 hardens, a columnar mortar 9 is formed on the lower side of the base plate portion 10 as described later (see FIG. 3D).

Further, as shown in FIGS. 2 (d) and 3 (a), bolt insertion holes 11, 11 through which the anchor bolts 3, 3 are inserted are provided in the base plate portion 10 so as to penetrate in the thickness direction. It is done. In the present embodiment, the base plate portion 10 is configured to have a plurality of bolt insertion holes 11, 11. In the illustrated example, an example is shown in which two bolt insertion holes 11 and 11 are provided in the base plate portion 10 so as to be located diagonally in plan view. These bolt insertion holes 11 and 11 are provided so as to be located closer to the center side of the base plate portion 10 than the notch-like concave portions 12 and 12 provided to be located on the same diagonal line.
As shown in FIGS. 3 (c) and 3 (d), the column metal fitting 1 has a columnar shape in which the nut 5 is screwed to the anchor bolts 3 and 3 inserted into the bolt insertion holes 11 and 11 of the base plate portion 10. It is fixed on mortar 9 (adjustment mortar 6). In the illustrated example, an example in which the washer 4 is interposed on the base plate portion 10 and the nut 5 is screwed to the anchor bolts 3 is shown.
The base plate portion 10 may be configured to have three or more bolt insertion holes 11. In this case, the base 2 may be provided with the anchor bolts 3 in a number corresponding to the number of the bolt insertion holes 11.

Also, the pedestal 1 is spaced apart so as to be located on the upper side of the base plate portion 10, and the receiving plate portion 13 on which the lower end 21 of the column 20 is placed, and these base plate portions 10 And a connecting portion 16 for connecting the receiving plate portion 13 with each other.
The receiving plate-like portion 13 is substantially in the form of a flat plate disposed along the thickness direction in the vertical direction. In the present embodiment, the receiving plate-like portion 13 has a substantially square shape (in the example of the figure, a substantially square shape) in plan view in substantially the same manner as the base plate-like portion 10. In the present embodiment, each corner of the receiving plate 13 is not formed at each corner of the receiving plate 13, but each corner of the receiving plate 13 is formed by each corner of the base plate 10. It has a more angular shape (see FIGS. 2 (b) and (d)). In the illustrated example, a relatively small chamfered portion is provided at each corner of the receiving plate 13.
The dimension of one side of the receiving plate 13 (the dimension in the first direction and the dimension in the second direction) is substantially the same as the dimension of one side of the base plate 10 described above.
Further, in the present embodiment, the receiving plate 13 is provided with the insertion portion 14 to be inserted into the recess 22 of the lower end 21 of the column 20.

The insertion portion 14 is provided so as to project upward from the upper surface of the receiving plate 13. The insertion portion 14 is substantially flat and disposed along the thickness direction in the first direction to correspond to the recess 22 of the column 20, and is positioned substantially at the center of the receiving plate 13 in the first direction. It is provided to do. Further, in the illustrated example, the insertion portion 14 is provided so as to be located at a substantially central portion in the second direction of the receiving plate 13 without providing the inserting portion 14 in the entire second direction of the receiving plate 13. An example is shown.
In addition, pin insertion holes 15 and 15 are provided in the insertion portion 14 so as to penetrate in the first direction which is the thickness direction. In the present embodiment, two pin insertion holes 15 are provided in the insertion portion 14 in correspondence to the pin insertion holes 23 provided in the lower end 21 of the column 20. The pin insertion holes 15 and 15 overlap with the pin insertion holes 23 and 23 of the lower end 21 of the column 20 when viewed in the first direction with the insertion portion 14 inserted into the recess 22 of the lower end 21 of the column 20 It is provided to be

  The lower end 21 of the column 20 and the column base 1 insert the insertion portion 14 of the column base 1 into the recess 22 of the lower end 21 of the column 20, and the pin insertion holes 15, 15 via the pin insertion holes 23, 23. Are joined by pins (drift pins) 24 and 24 (see FIG. 2 (c)) which constitute a connector inserted into the. The lower end 21 of the column 20 and the column base 1 are not limited to those joined by the two pins 24 and 24, but may be joined by one or three or more pins 24. In this case, the number and positions of the pin insertion holes 23 and the pin insertion holes 15 may be appropriately modified. Further, the insertion portion 14 is not limited to a substantially flat plate shape, but may be a columnar shape, a cylindrical shape, a pin shape or the like. In this case, the recess 22 of the column 20 may be appropriately deformed. Further, the lower end 21 of the column 20 and the receiving plate portion 13 (insertion portion 14) of the column metal fitting 1 may be joined together using an adhesive or the like.

The connection part 16 is provided with several vertical plate-like-part 17 distribute | arranged along the thickness direction in a substantially horizontal direction in this embodiment. Further, a plurality of vertical plate-like portions 17 are provided so as to radially extend from immediately below the axial center of the column 20. Further, the vertical plate-like portion 17 is provided so as to extend in four directions from immediately below the axial center of the column 20. In addition, longitudinal plate-like portions 17, 17 extending in the first direction are provided to be located substantially at the center of the second direction, and longitudinal plate-like portions 17, 17 extending in the second direction are It is set as the structure provided so that it may be located in the approximate center part of the direction. That is, four vertical plate-like parts 17, 17, 17, 17 are provided in a substantially cross shape in plan view.
Further, the vertical plate-like portions 17, 17, 17 and 17 are provided so that the end faces in the extending direction are substantially flush with the end faces of the receiving plate-like portion 13 and the four rounds of the base plate-like portion 10. There is. With such a configuration, the inner peripheral surface of the mold 18 is added to the end faces of the four rounds of the base plate 10, and the end faces of these vertical plates 17, 17, 17 and 17 are brought into contact or approached. It is possible to improve the alignment of the form 18 with respect to the pedestal 1.

Further, the dimensions along the vertical direction of the vertical plate-like portions 17, 17, 17 and 17 are appropriate from the viewpoint of the fastening workability of the nut 5 and the workability at the time of injecting the mortar 8, It may be dimensioned. In the illustrated example, the dimension along the vertical direction of the vertical plate-like portions 17, 17, 17, 17 is set to be smaller than the dimension of one side of the receiving plate-like portion 13 and the base plate-like portion 10. .
The vertical plate-like portions 17, 17, 17 and 17 may be integrally formed, or may be fixed to each other by welding or the like as appropriate. Moreover, the insertion part 14 is integrally provided in the vertical plate-like parts 17 and 17 extended in the 2nd direction among these vertical plate-like parts 17, 17, 17, and the penetration provided in the receiving plate-like part 13. The insertion portion 14 may be inserted into the hole. Further, upper end portions and lower end portions of the vertical plate-like portions 17, 17, 17, 17 may be fixed to each of the receiving plate-like portion 13 and the base plate-like portion 10 by welding or the like.

In addition, the thickness dimensions of these vertical plate-like portions 17, 17, 17, 17 and the above-mentioned receiving plate-like portion 13 and base plate-like portion 10 may be an appropriate dimension from the viewpoint of strength etc. It may be about 15 mm. In the illustrated example, the thickness dimensions of the receiving plate-like portion 13 and the base plate-like portion 10 are substantially equal to each other, and the thickness dimensions thereof are larger than the thickness dimensions of the vertical plate-like portions 17, 17, 17, 17 Although an example is shown, the present invention is not limited to such an embodiment.
Further, the pillar base 1 is made of metal made of an appropriate steel material. The support base 1 may be subjected to appropriate anticorrosion treatment such as zinc plating on the surface.

Next, an example of the construction method of the pillar base 1 which concerns on this embodiment is demonstrated.
The construction method of the column base 1 according to the present embodiment includes the step of constructing the adjustment mortar 6 on the foundation 2 as shown in FIG. 3 (a). The adjustment mortar 6 may be constructed while adjusting the upper surface level so that the installation height of the column 20 (column base 1) becomes a predetermined level. In addition, this adjustment mortar 6 may be formed by filling an uncured mortar in an appropriate form frame provided on the foundation 2, and the foundation mortar 2 may be formed of a solid mortar relatively hardened. It may be placed on top and formed.
Moreover, the construction method includes the step of installing the column base 1 on the adjustment mortar 6. When the adjustment mortar 6 is hardened, the anchor bolts 3 are inserted into the bolt insertion holes 11 of the base plate portion 10, and the pedestal 1 is set.

  Further, as shown in FIGS. 3 (b) and 3 (c), the same construction method includes a step of installing a mold 18 on the foundation 2 so as to surround the base plate-like portion 10 of the column base 1 . In the illustrated example, an example in which the mold frame 18 is integrally formed into a substantially square cylindrical shape is shown, but a plurality of plate members are tightened by an appropriate clamp or the like to be configured into a substantially square cylindrical shape. It is good also as things. Further, the position of the upper end surface of the mold 18 is lower than that of the receiving plate 13 so that the injection tool 7 for injecting the mortar 8 can be inserted below the receiving plate 13 of the pedestal 1. The height dimension may be set to be appropriate. In addition, before installing the formwork 18 in this way, or before installing the formwork 18 and injecting the mortar 8, adjust the column base 1 by screwing the nuts 5 and 5 onto the anchor bolts 3. It may be fixed on the mortar 6. Further, after the pedestal 1 is fixed in this manner, the lower end 21 of the pillar 20 may be joined to the pedestal 1 and the pillar 20 may be erected.

Further, as shown in FIG. 3C, the construction method includes a step of injecting and filling the mortar 8 between the form 18 and the adjustment mortar 6 via the injection portion 19. The mortar 8 may be injected using at least one of the plurality of injection portions 19 (notched recess 12) using an appropriate injection tool 7. For example, mortar 8 may be injected through one injection portion 19, and injection may be performed while confirming the filling degree of mortar 8 in injection portions 19 located on the diagonal of the injection portion 19.
And if mortar 8 hardens, you may make it remove form 18 suitably. As a result, on the lower side of the base plate portion 10, a columnar mortar 9 having a substantially square prism shape corresponding to the inner peripheral shape of the mold 18 is formed. The dimension of one side of the columnar mortar 9 (the dimension in the first direction and the dimension in the second direction) is substantially equal to or slightly larger than the dimension of one side of the base plate-like portion 10.
In addition, the said construction procedure is only an example, and as long as it does not inhibit the function of each member, you may make it carry out by another procedure, In addition, a various deformation | transformation is possible.

With the construction of the column base 1 and the column base 1 according to the present embodiment, the mortar (columnar mortar) 9 provided on the lower side can be installed well and constructed by using the above-described configuration.
That is, the column base 1 comprises the base plate portion 10 placed on the adjustment mortar 6, the receiving plate portion 13 on which the lower end 21 of the column 20 is placed, and the base plate portion 10 and the receiving plate And a connecting portion 16 for connecting the third portion 13. Therefore, the pillar 20 can be erected on the foundation 2 via the pedestal 1.
Further, a plurality of injection portions 19 of mortar 8 to be filled between the mold 18 provided on the foundation 2 and the adjustment mortar 6 so as to surround the periphery of the base plate 10 in the base plate 10. A through hole or a plurality of cutouts 12 are provided. Therefore, the mortar 8 can be injected and filled between the formwork 18 surrounding the periphery of the base plate portion 10 and the adjustment mortar 6 via the injection portion 19. As a result, the columnar mortar 9 formed on the lower side of the base plate 10 can be shaped according to the outer shape of the base plate 10 (the inner circumferential shape of the mold 18). That is, it is possible to suppress that the columnar mortar 9 formed on the lower side of the base plate portion 10 projects in the plan view and protrudes to the outside of the column 20 or is largely recessed inside.

In addition, since a plurality of injection parts 19 are provided, when injected from any injection part 19, the other injection parts 19 function as air vent holes, and a hollow part is formed between the formwork 18 and the adjustment mortar 6. It is possible to control what is done.
Further, since the through-hole or notch-shaped recess 12 constituting the injection portion 19 of the mortar 8 is provided in the base plate portion 10, it is not necessary to separately provide a special washer or the like for mortar injection. Simplification can be achieved.

  Further, in the present embodiment, the base plate portion 10 has a substantially polygonal shape in a plan view, and is provided with the notch-shaped concave portion 12 constituting the injection portion 19 at each corner. Thus, the mortar 8 can be injected and filled via at least one notch 12 of each corner. Thereby, even when the adjustment mortar 6 is provided relatively close to the formwork 18, one provided with a through hole as the injection part 19 or the notch-like concave part 12 in the middle part of the side part Compared with what was provided, the filling property of the mortar 8 to the circumference | surroundings of the adjustment mortar 6, especially the entering corner part of the formwork 18 can be improved.

  It should be noted that instead of the configuration in which the notch-like concave portion 12 constituting the injection portion 19 is provided at each corner portion of the base plate portion 10, for example, the notch shape constituting the injection portion 19 at a pair of corner portions located diagonally The recess 12 may be provided. Further, instead of the configuration in which the notch-like concave portion 12 constituting the injection portion 19 is provided at the corner of the base plate-like portion 10, the notch-like concave portion 12 constituting the injection portion 19 is provided It may be as well. Further, instead of or in addition to the configuration in which the notch-like concave portion 12 configuring the injection portion 19 is provided, a through hole configuring the injection portion 19 may be provided in an end portion or the like of the base plate portion 10.

Moreover, in this embodiment, although the example which made the base plate-like part 10 and the receiving plate-like part 13 planarly viewed and made substantially square shape is shown, it is not restricted to such a shape, Other polygonal shape or substantially It may be in a circular shape or the like, or may be in various shapes.
Further, in the present embodiment, the connection portion 16 is configured to have the vertical plate-like portions 17, 17, 17 and 17 in a substantially cross shape in plan view, but the present invention is limited to such a configuration. I can not. The connection portion 16 may be, for example, one provided with a plurality of vertical plate-like portions 17 provided in parallel or the like and separated from each other, or one having a columnar or cylindrical shape, and various other configurations. It may be The specific configuration of each part of the column base 1 according to the present embodiment is not limited to the above-described configuration, and various modifications are possible.

DESCRIPTION OF SYMBOLS 1 Column base metal 10 Base plate-like part 12 Notched recessed part 13 Receiving plate-like part 16 Connection part 18 Formwork 19 Injection | pouring part 20 pillar 21 Lower end 2 Foundation 6 Adjustment mortar 8 mortar

Claims (3)

A pedestal that is installed on the foundation via adjustment mortar and supports columns,
A base plate-like portion placed on the adjustment mortar, a receiving plate-like portion spaced apart from the base plate-like portion so as to be positioned above the base plate-like portion, and a lower end of the column being placed And a connecting portion connecting the base plate portion and the receiving plate portion;
In the base plate-like portion, a plurality of through-holes constituting a pouring portion of mortar filled between a mold provided on the foundation so as to surround the periphery of the base plate-like portion and the adjustment mortar or A pedestal according to the present invention, characterized in that a plurality of notched recesses are provided. In claim 1,
The said base plate-like part is planarly viewed and made substantially polygonal shape, and it is set as the structure which provided the notch-shaped recessed part which comprises the said injection | pouring part in each corner. It is a construction method of the column footings of Claim 1 or 2, Comprising:
A step of constructing an adjustment mortar on a foundation, a step of placing the pillar base on the adjustment mortar, a step of placing a formwork on the foundation so as to surround a base plate-like portion of the pillar base And injecting the mortar between the formwork and the adjustment mortar via the injection part and filling the mortar with the formwork.

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